Licensed Electrical Contractor NEC General Requirements 3

Question 1

Per NEC 110.26(A)(1), what is the minimum clear working space depth in front of equipment operating at 151–600V to ground with exposed live parts on one side and a grounded surface on the other (Condition 2)?

Accepted Answer

3.5 feet

Answer

NEC Table 110.26(A)(1) specifies 3.5 feet (42 inches) of working clearance for 151–600V Condition 2.

Question 2

What does NEC 110.22 require to be legibly marked on disconnecting means?

Accepted Answer

The load served and the source of supply

Answer

NEC 110.22 requires each disconnecting means to be legibly marked to indicate the load served and its source of supply.

Question 3

According to NEC 110.12, electrical equipment must be installed in a:

Accepted Answer

Neat and workmanlike manner

Answer

NEC 110.12 requires all electrical equipment to be installed in a neat and workmanlike manner.

Question 4

Under NEC 110.14(C)(1), the temperature rating of a conductor connected to a 60°C-rated terminal on a device rated 100A or less must be based on:

Accepted Answer

60°C ampacity tables

Answer

NEC 110.14(C)(1) requires that conductors connected to 60°C-rated terminals on equipment 100A or less be sized using the 60°C ampacity column.

Question 5

What is the NEC definition of a 'qualified person'?

Accepted Answer

One who has skills and knowledge related to the construction and operation of electrical equipment and installations

Answer

The NEC Article 100 definition of a qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and has received safety training.

Licensed Electrical Contractor Practice Test

Licensed Electrical Contractor Practice Test

Licensed Electrical Contractor NEC General Requirements 3